Regimes for zone settling of waste activated sludges
Journal
Water Research
Journal Volume
30
Journal Issue
8
Pages
1844-1850
Date Issued
1996
Author(s)
Abstract
Regimes for the zone settling of the waste activated sludges has been investigated experimentally. Channelling in sludge was observed in the high concentration test which enhanced the settling. In low concentration tests, large flee aggregates would form spontaneously from an originally macroscopically homogeneous settling sludge, which also enhanced the settling. Only in the intermediate concentration range could the Richardson-Zaki type correlation be adequately applied. Empirical criteria for differentiation of settling regimes were proposed.
Subjects
Activated sludge
Channelling
Floc aggregation formation
Zone settling
SDGs
Type
journal article